Make sure the right Catalytic Converter/s are fitted. My 2012 +4 had the wrong one fitted and therefore thought the engine was producing incorrect emission levels and warned me by showing engine warning light. I reported it to Morgan immediately and on a recent trip to Williams had the converter replaced (under warranty)and the car checked. I appreciate that's not maybe as simple for you but I'm sure there's a way to check part numbers etc.
Hope it gets sorted.
